代码切换(CS)是多语言社区中的常见语言现象,其包括在说话时在语言之间切换。本文提出了我们对普通话 - 英语CS演讲的结束地理识别的调查。我们分析了不同的CS特定问题,例如CS语言对中语言之间的属性不匹配,切换点的不可预测性质,以及数据稀缺问题。通过使用分层Softmax的语言识别通过建模子字单元来利用非语言识别来利用非统计符号来利用和改善最先进的端到端系统,通过人为地降低说话率,并通过使用增强数据来实现子字单元。使用速度扰动技术和几个单机数据集不仅可以在CS语音上提高最终性能,还可以在单​​格式基准上,以使系统更适用于现实生活环境。最后,我们探讨了不同语言模型集成方法对提出模型性能的影响。我们的实验结果表明,所有提出的技术都提高了识别性能。最佳组合系统在混合误差率方面将基线系统提高到35%,并在单机基准上提供可接受的性能。
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本文提出了我们在改进患有数据稀缺的代码切换语言模型的最新努力。我们调查通过人为生成它们来增加代码切换培训文本数据的方法。具体地,我们提出了一种基于循环一致的对手网络的基于框架,将单晶文本传输到代码切换文本中,考虑代码切换为讲话方式。我们在Seame Corpus上的实验结果表明,利用人工生成的码切换文本数据始终如一地提高语言模型以及自动语音识别性能。
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本文提出了通过语音增强改善嘈杂演讲的自动语音识别的最新调查。我们提出了一种名为Multi-Coldiminators CycliCan的新型方法,以降低输入语音的噪声,从而提高自动语音识别性能。我们所提出的方法利用了语音增强的Cycleangan框架而无需任何并行数据,并通过引入检查不同频率区域的多个鉴别器来改进它。此外,我们表明,在训练数据的同类子集上训练多个发电机比所有训练数据上的一个发电机更好。我们在CHIME-3数据集中评估我们的方法,并在评估集上观察到开发集的提高高达10.03%,高达14.09%。
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我们报告了激进的量化策略,这些策略极大地加速了复发性神经网络传感器(RNN-T)的推理。我们使用4位整数表示进行权重和激活,并应用量化意识训练(QAT)来重新训练完整模型(声学编码器和语言模型)并实现近乎ISO的准确性。我们表明,根据网络本地属性量身定制的自定义量化方案对于在限制QAT的计算开销的同时,至关重要。密度比语言模型融合已显示出在RNN-T工作负载上的准确性提高,但严重增加了推理的计算成本。我们表明,我们的量化策略可以使用大型宽度宽度进行假设搜索,同时实现与流媒体兼容的运行时间,并且与完整的Precision模型相比,我们可以实现与流相兼容的运行时间和7.6 $ \ times $的完整模型压缩比。通过硬件仿真,我们估计端到端量化的RNN-T(包括LM Fusion)的3.4 $ \ times $从fp16到INT4,导致实时因子(RTF)为0.06。在NIST HUB5 2000,HUB5 2001和RT-03测试集中,我们保留了与LM Fusion相关的大部分收益,将平均WER提高了$ 1.5%。
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以前的研究已经证实了利用明晰度信息达到改善的语音增强(SE)性能的有效性。通过使用铰接特征的地点/方式增强原始声学特征,可以引导SE过程考虑执行增强时输入语音的剖视特性。因此,我们认为关节属性的上下文信息应包括有用的信息,并可以进一步利用不同的语言。在这项研究中,我们提出了一个SE系统,通过优化英语和普通话的增强演讲中的上下文清晰度信息来提高其性能。我们通过联合列车与端到端的自动语音识别(E2E ASR)模型进行联合列车,预测广播序列(BPC)而不是单词序列的序列。同时,开发了两种培训策略,以基于基于BPC的ASR:多任务学习和深度特征培训策略来培训SE系统。 Timit和TMhint DataSet上的实验结果证实了上下文化学信息促进了SE系统,以实现比传统声学模型(AM)更好的结果。此外,与用单声道ASR培训的另一SE系统相比,基于BPC的ASR(提供上下文化学信息)可以在不同的信噪比(SNR)下更有效地改善SE性能。
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本文介绍了模拟设计空间搜索的新观点。为了最大限度地减少上市时间,这一努力将更好地推广为基于现有技术中定义的全局优化的约束满足问题。我们纳入了模型的代理,与无模型学习形成对比,实施信任区域策略。因此,可以通过监督学习培训简单的前馈网络,其中收敛相对较大。实验结果证明了搜索迭代的数量级。另外,容纳了对PVT条件的前所未有的考虑。在TSMC 5/6NM过程的电路上,我们的方法实现了人类设计师的性能。此外,该框架在工业环境中的生产中。
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In this paper, we propose a robust 3D detector, named Cross Modal Transformer (CMT), for end-to-end 3D multi-modal detection. Without explicit view transformation, CMT takes the image and point clouds tokens as inputs and directly outputs accurate 3D bounding boxes. The spatial alignment of multi-modal tokens is performed implicitly, by encoding the 3D points into multi-modal features. The core design of CMT is quite simple while its performance is impressive. CMT obtains 73.0% NDS on nuScenes benchmark. Moreover, CMT has a strong robustness even if the LiDAR is missing. Code will be released at https://github.com/junjie18/CMT.
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Dataset distillation has emerged as a prominent technique to improve data efficiency when training machine learning models. It encapsulates the knowledge from a large dataset into a smaller synthetic dataset. A model trained on this smaller distilled dataset can attain comparable performance to a model trained on the original training dataset. However, the existing dataset distillation techniques mainly aim at achieving the best trade-off between resource usage efficiency and model utility. The security risks stemming from them have not been explored. This study performs the first backdoor attack against the models trained on the data distilled by dataset distillation models in the image domain. Concretely, we inject triggers into the synthetic data during the distillation procedure rather than during the model training stage, where all previous attacks are performed. We propose two types of backdoor attacks, namely NAIVEATTACK and DOORPING. NAIVEATTACK simply adds triggers to the raw data at the initial distillation phase, while DOORPING iteratively updates the triggers during the entire distillation procedure. We conduct extensive evaluations on multiple datasets, architectures, and dataset distillation techniques. Empirical evaluation shows that NAIVEATTACK achieves decent attack success rate (ASR) scores in some cases, while DOORPING reaches higher ASR scores (close to 1.0) in all cases. Furthermore, we conduct a comprehensive ablation study to analyze the factors that may affect the attack performance. Finally, we evaluate multiple defense mechanisms against our backdoor attacks and show that our attacks can practically circumvent these defense mechanisms.
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Automatic music generation with artificial intelligence typically requires a large amount of data which is hard to obtain for many less common genres and musical instruments. To tackle this issue, we present ongoing work and preliminary findings on the possibility for deep models to transfer knowledge from language to music, by finetuning large language models pre-trained on a massive text corpus on only hundreds of MIDI files of drum performances. We show that by doing so, one of the largest, state-of-the-art models (GPT3) is capable of generating reasonable drum grooves, while models that are not pre-trained (Transformer) shows no such ability beyond naive repetition. Evaluating generated music is a challenging task, more so is evaluating drum grooves with little precedence in literature. Hence, we propose a tailored structural evaluation method and analyze drum grooves produced by GPT3 compared to those played by human professionals, exposing the strengths and weaknesses of such generation by language-to-music transfer. Our findings suggest that language-to-music transfer learning with large language models is viable and promising.
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Few Shot Instance Segmentation (FSIS) requires models to detect and segment novel classes with limited several support examples. In this work, we explore a simple yet unified solution for FSIS as well as its incremental variants, and introduce a new framework named Reference Twice (RefT) to fully explore the relationship between support/query features based on a Transformer-like framework. Our key insights are two folds: Firstly, with the aid of support masks, we can generate dynamic class centers more appropriately to re-weight query features. Secondly, we find that support object queries have already encoded key factors after base training. In this way, the query features can be enhanced twice from two aspects, i.e., feature-level and instance-level. In particular, we firstly design a mask-based dynamic weighting module to enhance support features and then propose to link object queries for better calibration via cross-attention. After the above steps, the novel classes can be improved significantly over our strong baseline. Additionally, our new framework can be easily extended to incremental FSIS with minor modification. When benchmarking results on the COCO dataset for FSIS, gFSIS, and iFSIS settings, our method achieves a competitive performance compared to existing approaches across different shots, e.g., we boost nAP by noticeable +8.2/+9.4 over the current state-of-the-art FSIS method for 10/30-shot. We further demonstrate the superiority of our approach on Few Shot Object Detection. Code and model will be available.
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